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• Mouse not clicking properly

  - by RamoneDexter

  Okay guys, here's a tricky one. I'm running 10.10 on my pc but i've had this issue for some time now.I'm having strange issues with the mouse. What happens is when I get into Ubuntu, I can click anything, but as soon as I click something to open a window, run a program, I can no longer click anything EXCEPT the last thing I clicked. When I right click the last thing I clicked, it allows me to click everything normally, but only until I open something new. So for example I'll click the email icon on docky to open up my email client, which opens but is unresponsive until I right click docky. Then if I open an attatchment, I must also right click the MENU bar on my email client. Sometimes it also works if I simply right click on the newly opened window. I have tried this mith mutiple mice and still the same issue.

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• Parsing glGetShaderInfoLog() to get error info. Is this reliable, or is there a better way?

  - by m4ttbush

  I want to get a list of errors and their line numbers so I can display the error information different to how it's formatted in the error string, and also show the line in error. It looks easy enough to just parse the result of glGetShaderInfoLog(), look for "ERROR:" then read the next number up to : and then the next, and then the error description up to the next newline. But the OpenGL docs say "Application developers should not expect different OpenGL implementations to produce identical information logs." Which makes me worry that my code may behave incorrectly on different systems. I don't need them to be identical, I just need them to follow the same format. So is there a better way to get a list of errors with line number separate, is it safe to assume that they'll always follow the "ERROR: 0:123:" format, or is there simply no reliable way to do this? Thanks!

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• Adding a short delay between bullets

  - by Sun

  I'm having some trouble simulating bullets in my 2D shooter. I want similar mechanics to Megaman, where the user can hold down the shoot button and a continues stream of bullets are fired but with a slight delay. Currently, when the user fires a bullet in my game a get an almost laser like effect. Below is a screen shot of some bullets being fired while running and jumping. In my update method I have the following: if(gc.getInput().isKeyDown(Input.KEY_SPACE) ){ bullets.add(new Bullet(player.getPos().getX() + 30,player.getPos().getY() + 17)); } Then I simply iterate through the array list increasing its x value on each update. Moreover, pressing the shoot button (Space bar) creates multiple bullets instead of just creating one even though I am adding only one new bullet to my array list. What would be the best way to solve this problem?

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• how to make startup application to open the folder or inode/directory after booting?

  - by santosamaru

  I think it will be awesome if after login the folder that locate not at the same localhost / can open it self like and application as skype and others. do we can make it because if this one works for it , it will help others people too that save musics and other file under the /home folder or the like me , i do need to click other partitions to listen songs and movie and other what i want is just single click when i do login. the partitions / folder / inode was open so i can simply click the Play button at the rhythmbox and click next just to watch the next edition of serial movies ^^ here the photos, i need this partition / hard disk to open while star up "almacén hard disk. thx out of context why do the Fn + F6 wont lock the mouse pad under the laptop i do using classics gnome ubuntu 1204.

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• ctrl + a doesn't work in browsers

  - by protos87

  The combination for select all (ctrl+a) doesn't work in a browser (either if we speak about firefox or chromium). It doesn't work if I try to clik in to the adress bar nor if I try to use it to select what I've written in google search bar at google.com. When I press ctrl + a it simply takes the cursor before the first letter. This doesn't happen when I use a text editor software like Libre Office. There the shortcut does what's supposed to do, selecting all the text. What could be the problem?

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• How to test other DE in Ubuntu 12.10 live (alpha)

  - by gsedej

  caution: 12.10 is not yet released but I was told it will say as is also when release happens (live session) So, new ubuntu live session does not have option to "logout" and choose different desktop environment (DE). This function was usable if one installs ubuntu live on USB stick with permanent changes. One can install any software, including KDE (plasma) or LXDE. Until including 12.04, one could simply logout and choose different DE. Now, there is no "logout" option in top right menu and if ran service lightdm restart it automatically logs in to live session account with unity.

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• OpenStack + Ubuntu 12.04

  - by csgeek

  Supposedly openstack can be installed easily under Ubuntu 12.04 LTS. I've installed 32 and 64bit versions of Ubuntu Server with the same behavior. sudo tasksel check OpenStack hit Okay then I get a tasksel: aptitude failed (100) I've seen: http://www.hastexo.com/resources/docs/installing-openstack-essex-20121-ubuntu-1204-precise-pangolin and https://github.com/EmilienM/doc-openstack documentation, but I was hoping that since it was an LTS released and it was an option in tasksel that I was simply overlooking something obvious and it's just a matter of selecting the right checkbox and hitting okay. Too much wishful thinking?

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• How do I implement URL rewriting in my .htaccess file?

  - by Alan

  I'd like to do some URL rewriting (Why? See this question.) so that instead of users seeing addresses like labouseur.com/course-compilers.html they can instead see and use simply labouseur.com/course-compilers (Even better, maybe I should restructure that so that it's courses/compilers.) I'm using a Linux-based shared hosting service for my website, so I do not have administrative control of the server, but I do have control over .htaccess. The references I've read online seemed less than clear to me, so I'm looking for a little clarity and advice here. Thanks!

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• Video playback not working in Ubuntu 11.10

  - by Dave M G

  (Ubuntu 11.10, Gnome Classic with Compiz, Nvidia graphics card) This problem occurs with every and all video, whether it's a Youtube video in Firefox, an AVI file in movie player, or any other video. Video simply does not work. When I start any kind of video, the image halts after a second or two. The sound, however, continues. Before it seemed that if I delete all the files in ~/.gstreamer-0.10/, then reboot, the video will play. However this is no longer the case. Manipulating files in that directory does nothing to help the situation. I am now no longer sure this is a gstreamer issue or something else. I am open to any and all possibilities. How can I get video playback to run smoothly on my machine?

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• Web App for storing and organize programming information?

  - by Fabzter

  So, I've found myself, after several years of coding (I consider myself a coder, rather than a programmer) full of links and loose snippets and coding tips, all dispersed across the web. In such way it is barely usable, even when every bit is important or interesting. I thought of simply storing the links in delicious or something alike, but it's not really the links I want to keep, I just need the succinth info. So I was thinking to use some web app, something like a wiki, maybe much more simple, so I could access it though my mobile if I need it. I could code it, but as I stated it before, I'm more of a code monkey, and I'm sure my solution would be far from decent... Can anyone give me recommendations on this?

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• Finding the median of the merged array of two sorted arrays in O(logN)?

  - by user176517

  Refering to the solution present at MIT handout I have tried to figure out the solution myself but have got stuck and I believe I need help to understand the following points. In the function header used in the solution MEDIAN -SEARCH (A[1 . . l], B[1 . . m], max(1,n/2 - m), min(l, n/2)) I do not understand the last two arguments why not simply 1, l why the max and min respectively. Thanking You.

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• SEO: Is promoting your backlinks a good strategy for improving search results for my site's name?

  - by user4394

  I run a website that's been around for about three years in the sports space. I am successfully ranking well for targeted keywords, but searching for the name of my site itself returns very poor results - it shows my site, its FB/Twitter, and then 15 pages of unrelated spam that happen to contain two words that, when combined, form my website's name. After that, my backlinks begin to show up spordically. As far as I can tell, I simply don't have enough backlinks and the backlinks I do have are ranked worse than the spam. (Site Explorer lists 200 external links to any page on our domain and 20 external links directly to the front page). To counter this, my strategy is to promote my backlinks so they get a better page rank than the spam. Does that make sense? Am I going in the right direction or should I just focus on getting more backlinks pointing directly to my site? Thanks in advance and I'd be happy to answer any questions I can (without giving away my site of course).

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• Booting but not rebooting from external USB hard drive, what could be the problem?

  - by user8276

  I have a Dell Inspiron 6400 laptop with a dead internal hard drive controller. It boots perfectly from CD or USB. I therefore removed the internal hard drive and installed Ubuntu 10.10 Maverick onto an external USB hard drive. It boots and runs perfectly when doing a "cold start" of the PC. However, when I choose restart/reboot in the Ubuntu menu (e.g. after an update), I get this error message from the BIOS: "No bootable devices, strike f1 to retry boot, f2 for setup utility, press f5 to run onboard diagnostics". I can make the system boot again by pressing f2 or f5 and exiting the utility without having done anything. Or, I can simply power off the system and do a new "cold start". Does anyone know the likely reason for this problem and how to fix it. It is not a big issue but an annoyance that I would like to fix if possible.

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• livecd won't boot 11.04

  - by user20006

  I bought a brand new computer yesterday (Toshiba Satellite Pro L770-10T : Intel Core i5 2410M, 2,3 GHz, 4096 Mo RAM, nVidia GeForce GT 525M) that simply won't boot any livecd I tried. I am using debian/ubuntu for a long time but this is the first time I can't boot a livecd Here is what I tried without success: Ubuntu 11.04 i386 and x64 both desktop and alternate Debian stable livecd old working ubuntu livecds including 8.x 9.x 10.x On ubuntu-10.04.2-desktop-i386.iso I had a kernel panic On 11.04 packages were corrupted although md5 and sha1 were correct I must add that those were burned on different cds CD-R or CD-RW. Any help would be greatly appreciated! Thanks in advance

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• Shut down Netbook by closing lid - ubunti 13.10

  - by The Liquidator

  My wife has an Acer Aspire One (with the SSD Card and an SD expansion card). It has never been able to hibernate or suspend, always creating errors and occasionally trashing the data on the SD card, which is the home partition so it's unfortunate. To get around the problem I have set all exit methods to produce shutdown - she tends to simply shut the lid. I'm aware the default behaviour has for some time been to suspend, but I've got round that using the gnome tweak tool. However, I've just installed 13.10 and whilst I have installed the gnome tweak tool and set it to shut down the system appears to be ignoring/bypassing the setting, electing to suspend when the lid is shut. Can anyone tell me how to fix it please? I'm quite happy to get my hands dirty with the command line.

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• Wifi stops working in 13.10

  - by Vitor

  OK, my wifi is connecting fine, but it just stop downloading and uploading data. The skype stops, trying to reconnect, the firefox nighly and the google chromium stops loading pages and websites, everythings stops. But when I see the network icon: connected to my wifi. Then, I simply reconnect, or disconnect and connect again. Reconnecting, the wifi starts working again, the skype icon turns green, the browsers work again. Previously, I had 13.04 and never had this problem. When I upgraded to Ubuntu 13.10, the wifi started to do this. And the wifi has this problem since the early times of 13.10; since I installed 13.10, the wifi is having this issue (from the first day I installed it). Anyone having the same problem? Anyone knows how to fix it?

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• Does tweeting 9 to 5 hurt job applicants?

  - by evadeflow

  If you were looking into a job applicant's background and discovered that he or she has 1200 followers on Twitter and averages 50 tweets per day (more than half of which are during business hours), would it affect your hiring decision? How and why? Personally, I'd be a little worried about the candidate's ability to focus on the job at hand if they're constantly checking in with their 'tweeps' thoughout the day. In non-tech jobs, a lot of companies simply block Twitter as an irrelevant distraction. But it can be a useful resource---to programmers in particular. I just wonder how much is too much. At what point does it become a red flag?

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• Paraview 3.98.1 takes too long to launch

  - by Alejo

  I have been used Ubuntu 12.10 with paraview 3.14.1 to run and visualise CFD simulations (OpenFoam and Eilmer3) and the experience has been really good up to date. When I wanted to try Ubuntu 13.01, I realised paraview 3.98.1 was the version to be installed in this distribution when running sudo apt-get install paraview. I noticed it takes way too long to launch, not to mention that paraFoam always produces an error so paraFoam -bulitin has to be used instead. Does anyone know the reason why paraview 3.98.1 takes so long to load?, is it because the new version has more feautures or Ubuntu 13.04 simply can't handle it smoother? My machine is a Thinkpad W530 with 16GB RAM 1600MHz and intel i7-3720QM. I am running Ubuntu under VMware player set-up with 4GB RAM, 2 cores and Automatic vitualization. Thanks.

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• If I am in the USA, should I not have a hosting provider in another country? [on hold]

  - by johnny

  I saw the various questions on SO about this. I'm not sure they answered me. I'm in the USA. Someone asked me about hosting on a company in South Africa. They are not a big company. This person simply liked the company for whatever reason. I only saw one horror story. Not many reviews really. It is a small outfit from what I can tell. But, the fact of it being in South Africa, does that matter? Do people ever pursue legal action against hosting companies anyway? The users will all be in the States. edit: I'm not sure why this is unclear.

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• Writing a spell checker similar to "did you mean"

  - by user888734

  I'm hoping to write a spellchecker for search queries in a web application - not unlike Google's "Did you mean?" The algorithm will be loosely based on this: http://catalog.ldc.upenn.edu/LDC2006T13 In short, it generates correction candidates and scores them on how often they appear (along with adjacent words in the search query) in an enormous dataset of known n-grams - Google Web 1T - which contains well over 1 billion 5-grams. I'm not using the Web 1T dataset, but building my n-gram sets from my own documents - about 200k docs, and I'm estimating tens or hundreds of millions of n-grams will be generated. This kind of process is pushing the limits of my understanding of basic computing performance - can I simply load my n-grams into memory in a hashtable or dictionary when the app starts? Is the only limiting factor the amount of memory on the machine? Or am I barking up the wrong tree? Perhaps putting all my n-grams in a graph database with some sort of tree query optimisation? Could that ever be fast enough?

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• Ubuntu 10.10 booting but not rebooting from external USB hard drive, what could be the problem?

  - by user8276

  I have a Dell Inspiron 6400 laptop with a dead internal hard drive controller. It boots perfectly from CD or USB. I therefore removed the internal hard drive and installed Ubuntu 10.10 Maverick onto an external USB hard drive. It boots and runs perfectly when doing a "cold start" of the PC. However, when I choose restart/reboot in the Ubuntu menu (e.g. after an update), I get this error message from the BIOS: "No bootable devices, strike f1 to retry boot, f2 for setup utility, press f5 to run onboard diagnostics". I can make the system boot again by pressing f2 or f5 and exiting the utility without having done anything. Or, I can simply power off the system and do a new "cold start". Does anyone know the likely reason for this problem and how to fix it. It is not a big issue but an annoyance that I would like to fix if possible.

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• How do I turn off nVidia high performance mode?

  - by gpen06

  I am new to Ubuntu 11.10 and never touched linux until today. I installed Ubuntu alongside with Windows 7. I have an issue with my laptop overheating and freezing when it uses the high performance GPU graphics mode (hybrid card). It is an easy fix for Windows 7. I simply set the graphics mode manually to the low performance integrated graphics (save power) mode using advanced power settings. In Ubuntu, I'm stumped at how to do this. When using Ubuntu, my laptop is showing the same symptoms as it did without the fix for Windows. I have the nVidia graphics driver installed for Windows which allows me to see which mode I am in. I downloaded it off of my laptop's website (ASUS). They do not offer driver downloads for linux. Screenshot of power settings in Windows 7

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• https (SSL) instead of http

  - by user1332729

  I am building myself a new website, out of privacy and security concerns I am contemplating trying to make it https only. It will be mobile-friendly using media queries but I am concerned--especially for mobile users--about the increased bandwidth. How much will doing so increase my bandwidth or slow load times? For pages where I'm not transferring sensitive information, should I leave external links (to a jQuery library, or a web font for instance) in http? Simply put, I have read articles saying the entire web would be more secure if everything was SSL but my actual knowledge of implementation is limited to payment gateways and log-in pages and such. I apologize for the open-ended nature of the question but anything, even just simple answers to the specific questions is welcomed.

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• World to Pixel Transformation

  - by D00d

  My objects have a location in world coordinates (basically 1.0f is a meter). If I simply draw my objects using their world coordinates, each meter will correspond to a pixel. Obviously that's not what I want. Now, I don't want to have to apply a transformation to each and every object's position when I draw them. As I happen to be using XNA, and spritebatch allows a Matrix to be passed in as an argument in it's begin method, I was wondering if there is a way to pass the World to Pixel transformation in there. Any suggestions? So far Matrix.CreateScale(new Vector3(zoom, zoom, 1)) puts the objects in their proper spot, but it also scales up the sprites. Is there a way to transform the position without enlarging the sprite? Thanks

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• Blender 2.6: How to Merge the Pros of Meshes and Surfaces

  - by fridojet

  there are two interesting kinds of objects: Meshes and Surfaces. Each of them offers very cool features. Object Type Specific Features Nice Features of Surfaces: (for example) They're as scalable as vector graphics (really nice!) You can build winding things real simply. Nice Features of Meshes: (for example) You can build organic things really good using the Sculpt Mode and a graphic tablet. You can use some special things like Physics. My Question There are things for which Surfaces are better and things for which Meshes are better. But how can I use both the best features of Surfaces and the best features of Meshes on one object at once? For example: How can I use Physics (like on Meshes) on lossless scalable objects (like Surfaces)? Thanks.

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